Quote - "Here's a little test for everyone then. I downloaded the following photo after visiting  both CGI AND real photo websites. I just chose the one. Which site did it come from? Real or Photoreal?"

Not to be dismissive honestly, but in today's world , does it matter??
what if the technician use actual photos of morgan freeman or a similar
skin type and just UV mapped it onto a well modeled head mesh.
and used Mental Ray ,Vray  ,IBL, Maya Blah Blah Blah...

..at which point he should have just contacted Mr Freeman's Publicist
an like gotten a Free headshot of the actual Man.

Well, as I said earlier, for me the whole point of doing Photorealism is the actual challenge to do it and do it convincingly. Otherwise, as someone else points out, you may as well just use a camera.